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691.

In production work where several castings are required

A.	split patterns are used	B.	loose piece patterns are used
C.	gated patterns are used	D.	match plate patterns are used

692.

Which of the following pattern can be used for symmetrical objects only?

A.	Gated pattern	B.	Split pattern
C.	Sweep pattern	D.	All of the above

693.

Which of the following material has maximum shrinkage during solidification?

A.	Cast iron	B.	Steel
C.	Copper	D.	Aluminium

694.

Shrinkage of cast iron on solidification is nearly

A.	1%	B.	5%
C.	6.50%	D.	13%

695.

The minimum section thickness for cast iron castings is

A.	1 mm	B.	3 mm
C.	6 mm	D.	10 mm

696.

Riser is generally located

A.	near the deepest section of the mould	B.	near the parting line
C.	on the upper most section of the casting	D.	opposite to the pouring end

697.

Surface finish of a casting is affected by

A.	fineness of sand	B.	pattern finish
C.	mould dressings	D.	All of the above

698.

Which of the following is always die casted?

A.	Rollers for bearings	B.	Balls for ball mills
C.	Pump shafts	D.	Carburettor body

699.

Tolerances in case of lost wax castings are of the order of

700.

In lost wax casting for non-ferrous materials, the material of the mould is

A.	Ethyl silicate	B.	Plaster of Paris
C.	Silica	D.	Sodium silicate